I read some earlier discussions on this subject but I am hoping to get any new info and a more warm fuzzy feeling for the following project:

I once had a '73 F700 with a worn out 370 2v in it. I did a total rebuild to the motor boring it to 429 adding forged crank, reworked the heads w/nickalloy seats etc. I've got many $K in the motor... I ended up scrapping the truck for other reasons and have had motor sitting at the machine shop for 10 years. I now have an opportunity to get an f250 extended cab 2wd which currently is powered by a 300 six. Can I fit the 429 in the f250 chassis. I have the clark 5sp that came out of the f700. Thanks.

 

Shoot Ya! Where theres a will theres a way!

 

The 460 was first used in the F series trucks in the mid 70's. The 370 / 429 uses the same engine architecture as the 460. The factory 460 engine mount assemblies will fit back to '65 in the 2wd frames

Since you already have the trans (and I assume the complete clutch and bellhousing assembly) you have most of the hard to find pieces.

As long as your F-250 is '65 or newer (what year is it anyway?), your engine will fit. There are factory parts that will allow you to bolt the engine into your frame.
You may have to do a bit of modification for the trans mount and the floor pan. I am not familiar with the Clark and it's mountings.

Other than that it is a fairly straight forward swap.

Roger Carter

 

snake please explain.... you say you bored a 370 out to a 429 i'm pretty sure that's impossible although the 370 and 429 shares the same crank it does not share the same bore or even a close enough size to machine out... the 370 has a bore of 4.05" (same as FE 360/390) and the 429 has a 4.36" bore (same as 460)....... now i am not 1000% percent certain that you couldn't re-sleeve it in the 4.36 bore but if you just bored it that would be a .31 bore..... now you might have been mistaken by thinking or being told that they bored it 30 over but 30 over is actually .030 so many people make this mistake but we all have to learn some way right?.............. and i have seen this same set up your speaking of 370 w/clark in a f250 so i know it can be done idk if he had to, or just wanted to, but that truck had a 4" body lift idk if it was for clearance or just looks.......i have also seen a monstrous 534 sd with all sorts of custom work done on motor in a 76 f350 (got a whole whopping 3 mpg) built for one purpose only, pulling trailer houses and looking awesome doing it. like goodwrench said where there is a will, there is a way

 

Oh I got cha on the explanation of the overbore possible misunderstanding some people might have. I've heard people claim huge displacement increases by boring the cylinders and I just let it pass. I'm not familiar at all with those heavy truck engines. I always heard they were best suited for what they were engineered for and to stick with the car/ light truck engineered engines. I'll but that engine Snake Knuckles built is bad *** and I'd love to see him do it!

 

Isn't a 370 the truck version of the 429/460? If so a 370 can become a 460...

 

Thanks for the input gentlemen... So the truck is a '79 f250. It is a friend of mine's and is in real nice shape. Anybody know what its worth? The 300 six runs good.
The long story on my 370 is: back in 1999 I jackknifed my pickup truck towing my brand new Newholland 2120. (Ever done a 180 with a trailer?) Miraculously, I drove home and still in shock(I guess) was bamboozled into buying a pretty little f600 w/ a 330 in it. ( I don't even think I paid attention to what the motor was). I drove up to the local trailer shop and bought a nice big trailer to hook to it. On my way home I realized what the 330 was worth when I dropped to 5mph up any hill long enough-and there wasn't anything on the trailer. Then I found 2 more junker f600s at a local cemetery for $500. One of them had a 370 2v in it and was in pretty good shape. I took her apart to the frame and planned to do a complete restoration. I immediately took the motor to a guy, Jan, that has been building motors for me since 1970. He recommended turning the motor into a 429 2v- I am not sure if he bored it or sleeved it. He said that even though it would be a 2 bolt main block, it didn't really matter in a truck application, it would be a strong motor. Then another friend of mine told me about the International 2400-dt466 he had just bought at auction and did I want it? What a beautiful truck! even with the Allison 5sp. It is still about the best running vehicle I own! So meanwhile I decided to scrap the whole f600 restoration project and cut my losses. I ended up giving away all 3 trucks except for the trans radiator and exhaust manifolds out of the 370... Meanwhile I bought a frick 00 sawmill sans power unit and decided to continue to build the 370 to power it. Jan bought me a forged crank, stock pistons, a mild RV cam, sodium filled exhaust valves, nickalloy seats, edlebrock, holley 650 and accel distributor. Fully assembled and ready to run, oil pump to deliver max at 1500rpm- cost $5K. Meanwhile I ended up powering the saw with a 1948 Cat D318 with 25,000 hours on it- which is perhaps the 2nd best running motor in my fleet. I have tried to find a home for the 429 for the last 10 years. Now my friend with the f250 has prostate cancer which we are hopeful will be cured but he will need to streamline his life a bit in the process and could probably use the money. I really do not need to add to my list of projects, but I also would like to see the 429 run. I will probably tag the thing as a farm truck. That's the poop.

 

i just don't think a 370 can be bored that large is my issue.......like i said before although it has a 429 crank about the only way to get it large enough to have a 429's bore is to use a different block which would have been way cheaper than trying to bore that large and sleeve it 4.05 to 4.36 is a hell of a bore job....... you might just have a really nicely tuned 370-376 and have been bamboozeled into believing you have a 429 now........i have heard of a fella scrounging just the right parts with a little machine work using high compression 390 parts and making one of these 370's into an unlikely firebreather

 

i would definitely talk to "jan" and with a little bit more knowledge under your belt and see just what exactly was done to this 370 on the bore/sleeve note

 

If a 370/429/460 are in the same engine family don't they all use the same blocks? It would make sense if the truck had massively over thick walls if it was for a work application only...

 

I would think that they would all have the same block castings.

Maybe you should throw your block casting numbers on here.

 

Engines that share the same architecture don't always share the same castings. Just because the externals appear the same, there is usually significant differences in the internal cores and molds. Ford typically doesn't make a "one size fits all" part and machine it as needed.

While this discussion is referring to the 385 family, I will use an example from the FE family. 352 and 427 FE's look pretty much the same on the outside, but they have a .230 bore difference, 4.00 vs 4.23. Ain't no way a 352 will take a .230 overbore and still be useable. Even a 360/390 (4.05 bore) won't bore to a 4.23.
Additionaly 352 and 390 FE's use different cores and there is only a .050 bore difference.

And for the 370 block casting numbers. Typically Ford used different casting / engineering number series on their medium and heavy duty parts, like the 370.
The numbers will look similar, but there will be different identifiers, not familar to most people.

RC

 

Well next time I am out visiting the motor I will find out what exactly was done and let you know. I am pretty sure it is a 429- he may have had a block sitting around. I'll let you know on that detail. I am just trying to decide if the f250 will make a good home for the motor or should I just let it go.

 

probably would be a real nice home for the motor if it is half of what you say it is